# Compiling Our TypeScript Parser to WASM Enhancing TypeScript parser performance with WebAssembly. - **Source:** [programming](https://brifing.si/source/21f413d8-a401-41ca-83b1-904b87bb8257) - **Published:** 2026-07-15 - **Topic:** [Software & Engineering](https://brifing.si/c/engineering) - **Original article:** - **On Brifing:** https://brifing.si/s/a7710cc2-2a38-4d7e-90b0-7553c3fc6c92 ## What is a TypeScript Parser? A TypeScript parser analyzes TypeScript code to generate an abstract syntax tree (AST). This tree is used to understand and transform the structure of the code. ## What is WebAssembly (WASM)? WebAssembly is a binary code format designed to run high-performance applications in modern web browsers. It can be compiled from languages like C++ and Rust. ## Why Compile to WASM? Compiling the TypeScript parser to WASM allows it to run faster in browser environments. This provides significant performance improvements for large codebases. ## How Was the Compilation Process? The TypeScript parser was first rewritten in a language like Rust and then compiled to WASM. This process ensured the code runs more efficiently in the browser. ## How Was Performance Measured? After compilation, the parser's speed and memory usage were compared. The WASM version proved to be significantly faster and more efficient than the JavaScript version. ## The Importance of This Development Compiling the TypeScript parser to WASM enhances the performance of web-based development tools, offering developers faster and more effective solutions. ## Sources covering this story - https://www.reddit.com/r/programming/comments/1ux5sj1/we_compiled_our_typescript_parser_to_wasm/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._